diff --git a/apps/backend/src/services/claim/kuaishou-cloud-claim-service.ts b/apps/backend/src/services/claim/kuaishou-cloud-claim-service.ts
index 990cdf54..aa17589d 100644
--- a/apps/backend/src/services/claim/kuaishou-cloud-claim-service.ts
+++ b/apps/backend/src/services/claim/kuaishou-cloud-claim-service.ts
@@ -372,10 +372,7 @@ export async function submitClaimUid(
   }
 
   if (executorKey === 'affiliate_dash') {
-    updatedTask =
-      (await bindAffiliateDashClaimForTask(updatedTask, expectedUid, {
-        keepExistingBindOnUidUpdate: shouldKeepAffiliateDashBindOnUidUpdate(),
-      })) || updatedTask
+    updatedTask = (await bindAffiliateDashClaimForTask(updatedTask, expectedUid)) || updatedTask
   }
 
   return getKuaishouCloudClaimDetail(token)
@@ -527,11 +524,7 @@ export async function submitAffiliateDashClaim(
  * 提交 UID 后触发 affiliate-dash 绑定（bind），把 bind_uuid / 二维码写回上下文，
  * task → waiting_binding（link_generated → waiting_binding 合法）。
  */
-async function bindAffiliateDashClaimForTask(
-  task: TaskRow,
-  gameAccount: string,
-  options: { keepExistingBindOnUidUpdate?: boolean } = {},
-) {
+async function bindAffiliateDashClaimForTask(task: TaskRow, gameAccount: string) {
   const taskContext = parseTaskContextValue(task)
   const flow = normalizeAffiliateDashFlow(taskContext.affiliateDash)
   if (!flow.orderNo || !gameAccount) {
@@ -539,42 +532,6 @@ async function bindAffiliateDashClaimForTask(
   }
 
   const now = nowIso()
-  const shouldReuseExistingBind = Boolean(
-    options.keepExistingBindOnUidUpdate &&
-      flow.bindUuid &&
-      flow.bound &&
-      flow.boundAccount &&
-      normalizeUid(flow.boundAccount) === normalizeUid(gameAccount),
-  )
-  if (shouldReuseExistingBind) {
-    const nextFlow = {
-      ...flow,
-      gameAccount,
-      expectedGameAccount: gameAccount,
-      bindMismatch: false,
-    }
-    const updatedTask = await updateTask(task.id, {
-      task_status: TASK_STATUS.WAITING_BINDING,
-      context_json: JSON.stringify({
-        ...taskContext,
-        affiliateDash: nextFlow,
-      }),
-      updated_at: now,
-    })
-    await createTaskEvent(
-      task.id,
-      'affiliate_dash_bind_reused_for_uid_update',
-      {
-        orderNo: flow.orderNo,
-        bindUuid: flow.bindUuid,
-        gameAccount,
-        boundAccount: flow.boundAccount,
-      },
-      now,
-    )
-    return updatedTask || task
-  }
-
   const bindResult = await bindAffiliateDashDelivery({
     orderNo: flow.orderNo,
     gameAccount,
@@ -667,11 +624,6 @@ async function refreshAffiliateDashBindState(task: TaskRow): Promise<TaskRow | n
   }
 }
 
-function shouldKeepAffiliateDashBindOnUidUpdate() {
-  const value = String(process.env.AFFILIATE_DASH_KEEP_BIND_ON_UID_UPDATE || '').trim().toLowerCase()
-  return value === '1' || value === 'true' || value === 'yes' || value === 'on'
-}
-
 function normalizeUid(value: unknown) {
   return String(value || '')
     .trim()